/Engine/Source/Developer/AssetTools/Public/IAssetTools.h
Exports the specified objects to file. First prompting the user to pick an export directory and optionally prompting the user to pick a unique directory per file
void ExportAssetsWithDialog ( const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & AssetsToExport, bool bPromptForIndividualFilenames )